Maximizing mRNA Production: At-line Process Monitoring for Improved Purity and Yield

Speaker:
Rok Sekirnik, Sartorius BIA Separations

Abstract:
The talk will present case studies of leveraging the power of at-line HPLC monitoring for process development to increase purity and yield of mRNA production. Approaches to optimize plasmid purification and linearization, IVT reaction and mRNA purifi cation will be described, including purification methods to achieve more than 95% supercoiled plasmid purity, optimize linearization reaction, and increase of IVT reaction yield from 3-5 mg/mL to 10-12 mg/mL. Further, use of at-line anayltics to monitor automated, continuous production in single use bioreactors to produce multi-gram amounts of mRNA will be demonstrated. Oligo dT-based affinity purification will be described with approaches to optimize dynamic binding capacity to reach up to 6 g/L. Multimodal chromatography and reverse-phase chromatography cases will be discussed for capture of non-polyadenylated RNA, and removal of dsRNA.

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